html{
	padding: 5px;
}
body {
	font-family: "黑体";
	display: block;
	margin: 0px;
	padding: 0px;
	background-color:#FFF;
}
.left_nav{
	position: relative;
	float: left;
	width: 170px;
	background-color: #FFF;
	-moz-border-radius: 3px;      /* Gecko browsers */
    -webkit-border-radius: 3px;   /* Webkit browsers */
    border-radius:3px;
    height:auto;
    min-height:700px;
    border-right: 3px solid #0090D7;
    padding: 10px 0px;
}
.left_nav a{
	color :red;
	text-decoration: none;
	font-size:12px;
	font-weight: bold;
}
.right_content{
	margin-left:175px;
}
.right_content iframe{
	-moz-border-radius: 3px;      /* Gecko browsers */
    -webkit-border-radius: 3px;   /* Webkit browsers */
    border-radius:3px; 
	width: 100%;
	height: 690px;
	border: 0px;
	background-color: #FFF;
}